A SAW-Less First Folded-Conversion Second Down-Conversion Receiver for Multistandard Broadcasting Radio Applications

作者：Wang Keping^*; Wang Zhigong; Lei Xuemei

来源：IEEE Transactions on Microwave Theory and Techniques, 2013, 61(4): 1674-1680.

DOI：10.1109/TMTT.2013.2248377

• AM
• blocker
• broadcasting radio
• CMOS
• digital audio broadcasting (DAB)
• digital radio mondiale (DRM)
• FM
• folded conversion
• low IF
• low power
• out-of-band (OB) interference
• surface acoustic wave (SAW)-less
• software-defined radio (SDR)
• wideband receiver

A surface-acoustic-wave-less first folded-conversion and second down-conversion receiver for the AM/FM/digital radio mondiale (DRM)/digital audio broadcasting (DAB) radio standards is presented. This architecture is more suitable for broadcasting radio with ultra-narrow signal bandwidth since it relaxes the requirement on the local area (LO) generator by decreasing its tuning range. To reduce the blockers and out-of-band (OB) interferers, current amplifying and polyphase filters are introduced simultaneously. An inverter-based switched capacitor array technique is proposed in voltage-controlled oscillator (VCO) design to isolate the noise from the substrate. With a single VCO, the receiver can cover the frequency range from 100 kHz to 1.5 GHz. Without the RF pre-filters, the in-band IIP3 is 1.5 dBm, and the OB IIP3 is up to 17.4 dBm. The LO phase noise in the worst case is -119 dBc/Hz@1 MHz. The chip is fabricated in a 0.18-mu m CMOS technology, and mounted on a QFN package. It consumes only 86.4 mW under 1.8-V supply. To our best knowledge, this is first receiver reported thus far that supports all four AM/FM/DRM/DAB standards.

• 出版日期2013-4
• 单位东南大学